Hi,
After brining, how long did you air dry it outside of the cave? It is often a good idea to let the initial rind form over the 3 to 5 days by leaving the cheese to sit out at room temp (around 20 C), flipping morning and evening, until it is more or less dry to the touch, or at least no moister than a clammy handshake. Then move to the cheese fridge to slow down the moisture loss and to let the rind form more slowly. I air dry my cheeses sitting on top of about 8 to 10 chopsticks over a bowl. The first day or two I also put a sushi mat or plastic gride on top of the chopsticks to try and reduce forming ridges (but these fade anyway, so it's not a big deal).
Anyway, I would give it a good wipe with a strong brine, then pat dry, and then air dry it outside your cave for 48 hours (unless your ambiant temperature is way too high).
- Jeff